Truss



(N0 M0de1.)

J. B. MAYER.

'TRUSS Patented Apr. 8, 1884,

By a a Q TIE/5559:

Nrrn STATES JOHN B. MAYER, OF PHILADELPHIA, PENNSYLVANIA.

TRUSS.

SPECIFICATION forming part of Letters Patent No. 296,342, dated April 8, 1884.

Application filed October 17, 1883. (No model.)

To rtZZ whom it may concern:

Be it known that 1, JOHN 13. MAYER, of the city and county of Philadelphia, State of Pennsylvania, a citizen of Bavaria, having resided one year last past in the United States, and made oath of my intention to become a citizen thereof, have invented a new and useful Improvement in Trusses, which im provement is fully set forth in the following specification and accompanying drawings, in which Figure 1 is a top or plan View of a truss embodying my invention. Fig. 2 is a vertical section in line a: as, Fig. 1. Fig. 3 is a vertical section in line 1 y, Fig. 1. Figs. 4 and 5 are views of detached parts. 7

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to trusses; and it consists in a pad, in combination with a band, an arm to which said pad is attached, a journaled elbow-lever mounted on said band and having said arm attached to it, a torsional spring operating on said elbow-lever, and a clamping device for attaching said spring to said band.

It also consists in a pad, in combination with a band, a journaled elbow-lever, a torsional spring, and a slide and screw, said slide being arranged and adapted to regulate the tension of said spring.

It also consists in additional improvements hereinafter more fully described and claimed.

Referring to the drawings, Arepresents the band of the truss, formed of flexible wire properly curved, whereby it may be bent to suit the body where worn and preserve the shape imparted to it, and a broad band is dispensed with, the metal employed being preferably silver, owing to its non-corrosive qualities. The ends of the band are threaded, as at a, for engagement with the bosses b of pads B, said pads serving to sustain the rear of the truss on the back of the wearer, and, owing to their screw-connection with the band, may be rotated and set nearer to or farther from the ends thereof, according to requirements.

(3 represents a front pad, which is connected with the band by means of an arm, D, which is secured to the lower part or vertical limb of an elbow-lever, E, which latter is jourturn thereon as an axis.

F represents a torsional spring, one end of which is connected with the band by means of a yoke or slide, G, encircling the same, and a screw, H, passing through the slide and tightening against the spring. The other end of the spring is freely inserted in an opening in the end of the horizontal limb of the elbowlever E, the tendency whereof is to depress said limb, and consequently raise the pad 0 to the position shown by the dotted lines, Fig. 3. The slide G may be moved nearer to or farther from the elbow-lever, so as to adjust the tension of the spring, whereby greater or less upward pressure may be imparted to the pad.

naled on the band, so as to permit the pad to a it exerts its upper pressure on said spot, as is I evident. By the employment of a torsional spring, I obtain a long and powerful spring, the same extending in a measure in the direction of the band, and avoiding a chamber to contain the spring, such chamber admitting of the lodgnlent of dirt and vermin. Furthermore, the pad and spring may be readily removed when desired, there being no concealed or intricate mechanism employed to sustain said parts. The arm D is vertically adjust-able onthelower limb of the elbow-lever E, so as to raise or lower the pad G, when so required, and when the same is adjusted it is held by meansof a screw, D, which tightens against the lever.

In cases where an inwardly-pressing front pad, 0, is also required, the same has its arm D non-rotatingly connected with the band and secured in position by means of a screw, 0, which is fitted to the boss 0 of the arm and tightens against the band, the contiguous part of the latter being flattened or squared, and the opening of the boss being correspondinglyshaped.

In order to connect the front pad with the arm D thereof, I secure to the inner face of said pad a serrated plate, J, and to the end of the arm a serrated plate, J, the two plates interlocking. Itis evident that but small screws may be employed for fastening the plate J to I a slide and screw, said slide being arranged the pad; hence, owing to the pressure on the pad and motions imparted thereto, the screws are liable to work loose and permit the separation of the pad. The plates J J- prevent motionof the pad on the arm, and as the screws employed are designed simply to hold said plates in contact, the pad is securely retained in position.

' crating on said elbow-lever and a clamping device for attaching said spring to said band. 2. A pad, in combination with a band, a

20 journaled 61bOW-16V61,L torsional spring, and

and adapted to regulate the tension of said spring, substantially as set forth.

3. A pad, in combination with a detachable arm, D, screw D, elbow-lever E, torsional spring F, and the band, substantially as and for the purpose set forth. Y

4. A pair of serrated interlocking plates, J J, in combination with a truss-pad which is attached to one of said plates, a supportingarm to which the other plate is attached, screws for connecting said plates together, an

elbow-lever to which said arm is attached, and

a spring attached to said arm and bearing on said elbow-lever, the latter being pivoted on said band, substantially as set forth.

' J. B. MAYER.

Witnesses:

JOHN A. WVIEDERsHEIM, I V. FJKIROHER. 

